Gear-casing.



R. A. PALMER.

GEAR GASING.

APPLIUATION FILED Nov.14, 1908.

Patented Apr. 5, 1910.

3 SHEETS-'SHEET l,

(Mez Q4 M @uw M B.. A. PALMER.

GEAR GASING.

APPLIUATION FILED NOV.14, 1908. 954,400. Patented Apn, 1910. 3 SHEETS-SHEET 2.

Bitumen; mlrnlnr @da v G) E Annmqn R. A. PALMER.

GEAR CASING.

APPLIoATIoN FILED Nov4 14. 190s.

954,40@ Patented Apr. 5,1910.

3 SHEETS-SHEET 3.

*wheel flanged edges Bfand 4' b means of a ends thereof. The web and liange ciently exclude mud an UNITED. sTATEs PATENT carica.

RANDALL A.. PALMER, (1F DETROIT, MICHIGAN, ASSIGNOR TO CARTERCAR COMPANY. 0F PONTIAC, MICHIGAN. A CORPORATION 0F MICHIGAN.'

GEAR-CASING.

` Specification of Letters Patent. Application tiled November 1'4, 1908. Serial No. 462,810.

Patented Apr. 5, 1910.

To all whom 'it meyconcem:

Be it known that I, RANDALL A. PALMER, a lcitizen of the United States, residin at Detroit, county of Wayne, State of Michi gan, have invented a certain new and useful mprovement in Gear-Casings, and declare the following to be a full, c ear, and exact description of the same, such as will'enable others Skilled in the art to which it pertains to make and use the saine, reference beinlg had to the accompanying drawings, whic form a part of this specification.

This invention relates to gear casing for motor vehicles, and has for its object an improved device of this ty e, that will etli- 4dust from t-he working arts of the chain, and its sprocket wheels, w ich will aid in the application of a lubricant thereto, and which is easily accessible and adjustable for purposes of repair or occasional cleansing.

VIn the drawngs:-Figure l, is a side elevation of the casing, with the shafts which pass therethrough shown in section,` and with the relative position of the chain and s rocket wheels indicated in dotted lines.

ig. 2, is a plan view of the same from above. Fig. 3, is an enlar ed cross sectional elevation of the smaller o the two sprocket wheels, and the adjacent portion of the easing alon the line c-c Fig. 1, the shaft whereon he sprocket wheel is mounted being shown in elevation. Fig. 4, is the same view alon the line b--b Fig. 1. 5, is a sectiona view through the portion of the casing inclosing the differential gearing, along the line a-l-a Fig. 1. Fig. 6, is a plan view of the cap piece 12, showing the attachving cli s along its lateral edges.

1 an 2 represent the upper and lower sections'of the casing piece, each being made in a single piece; these are complementary one to the other, and y are united along their .olts 5, therethrough. he large sprocket and the small wheel 8 are mounted on shafts 9 and 10, which ass transversely through the casing near t e opposite portions the casing 4are out away to considerable extent about the shaft 9 so that whatever the relative movement of the various parts .of the machinery to one another, due to the rosgheess of the reai, 'tes either "vertically Inot have `the eect of` tion that is cut away about the shaft 10 is preferably made in the form of an elli se, so as to allow for greater horizontal tian vertical movement. The chain 6 passes over the sprocket wheels at a convenient and safe distance from the adjacent inner faces of the casing. f

Oil may be introduced, as desired, through the aperture 11, and it is designed that a sullicient quantity should bc introdueed so that it will accuniulatein the bottom portion of the casing to a oint perhaps the height indicated by the ined-tl, so that, at each revolution of the chain it will, for a time,pass through this accumulated body of oil and be lubricated accordingly. Access to the interior of the case ma also be had through the removable cover pieces 21, or by removal of the under cap iece 12, though, of course, this would necessitate the release of the oil confined in the bottom of the casing. This piece is preferably, though not necessarily, secured to the complementary part of the casing iece 2 by the en agement of the integral ci pieces 12a a out and under the heads of bolts extending from the ed e of the casing These need only to be tig itened slightly after the cap piece has been slipped into lace to hold the same firml and similar y when it is desired to detac the cap piece, it is not necessary to unscrew the bolts to the point of removal to ei'ect the release of the clip portions of the cap piece.

13 is an aperture through the casing whose edges thereabout are strengthened by 'turned over flanges of the material, and, throu h which a shaft 14, not connected with the sprocket wheels, may ass without conflict with the chain or casing, provision bein made for its possible lateral or vertice movement, due to the jolting of the machine. The entry of dust or mud through this aperturey is prevented by the resence of the sleeve 15 through w ich e'shaft 14 passes, and which is held in lace with respect to the casing, not only by its flanged ed es 16, but by the set screw 1 n Fig. 3 is shown the nien'ns used t-o ex dude dust and dirt-from the casing, and

pleases through g it geuiplscs a' chambered A Atio'n `Ato tlierasingntfeaeh point, consisting essentially of another wall ieee secured outside of the main casing ody and spaced therefrom by an intervening air space, which is designed to be filled in art by the enga ement therein of a was er member 18, w ich s slidable with respect thereto, though fitting closely about the shaft; whereas, both the extra wall piece and the main casing is fixed in position, but appreciably spaced from the shaft.

The entire guard casin is suitably suspended from the frame o the machine by a knuckle-joint bar 20.

What I claim isz- In a gear casing, the combination of an upper concaved member provided with a llanged edge and having inspection and lubricating apertures through its top ortion, a complementary casing member s1milarly anged for registry with said upper member, whereby holdin bolts may be passed through them, and t ere being transverse apertures in the walls of the shell thus constituted for the passage of rotatable shafts therethrough and for permitting their basin at the bottom rotation and possible wavering from their initial axial positions without en aging against the adjacent edges of the shel members, a supplemental casing section lying parallel with and s aced from the ortions of the shells immediately surroun lng one of said a ertured portions, dust excluding washers aapbed to en a e closely about and tobe supported by suc s afts and to extend between the main casing walls and the adjacent supplemental caslng to prevent the undesired entry of forei n matter,y and a bottom closure memberY or said last mentioned casing, adapted to be removably secured thereto, whereby its concaved portion and the adjacent portions of its supporting casing are: formed as a liquid containing of the entire casing, substantially -as described.

In testimony whereof, I sign this specification in the resence of two witnesses.

ANDALL A. PALMER. Witnesses:

WILLIAM M. SWAN, CLARENCE E. DAY. 

